ZIP Code 08638

08638 is one of New Jersey's ZIP codes, delivering to addresses in Trenton, Mercer County.

City: Trenton
County: Mercer County
State: New Jersey
Prefix: 086xx

Where this code sits

08638 is part of the 086xx range, the group of codes handled by one mail processing centre. Trenton is served by 27 ZIP codes in total; the full list, with the county each falls in, is on the Trenton page.

Trenton New Jersey ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 08638 delivers to without sharing its boundary.

ZIP codes nearest 08638

The ZIP codes whose reference points sit closest to 08638.
ZIP code	Distance	Delivers to
ZIP code 08618	1.4 mi	Trenton, NJ
ZIP code 08608	2.1 mi	Trenton, NJ
ZIP code 08609	2.1 mi	Trenton, NJ
ZIP code 08640	2.6 mi	Joint Base Mdl, NJ
ZIP code 08641	2.6 mi	Joint Base Mdl, NJ
ZIP code 08611	2.6 mi	Trenton, NJ
ZIP code 08644	2.6 mi	Trenton, NJ
ZIP code 08648	2.6 mi	Lawrence Township, NJ

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 08638, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 08638. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.